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      <h1 class="post-title">SwipeRefreshLayout手动调用setRefresh(true)不起作用的原因</h1>

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        <span class="post-time"> 2017-09-22 </span>
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            <a href="/categories/android/"> Android </a>
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      <p>1.现象
往往发生这个现象是出现在onCreate中去调用这个方法,会发现不起作用.原因是在onCreate方法中view未加载完全,所以不能显示.</p>
<p>2.解决<br>
方法一:用post队列</p>
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<pre class="chroma"><code class="language-java" data-lang="java"><span class="n">refreshLayout</span><span class="o">.</span><span class="na">post</span><span class="o">(</span><span class="k">new</span> <span class="n">Runnable</span><span class="o">()</span> <span class="o">{</span>  

     <span class="nd">@Override</span>    
     <span class="kd">public</span> <span class="kt">void</span> <span class="nf">run</span><span class="o">()</span> <span class="o">{</span>  
        <span class="n">refreshLayout</span><span class="o">.</span><span class="na">setRefreshing</span><span class="o">(</span><span class="kc">true</span><span class="o">);</span>    
        <span class="n">onRefresh</span><span class="o">();</span><span class="c1">//是否触发onRefresh中的方法    
</span><span class="c1"></span>     <span class="o">}</span>    
<span class="o">});</span>    
</code></pre></td></tr></table>
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</div><p>方法二:手动设置加载图形的偏移量(相对于手动去初始化对应的view)</p>
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<pre class="chroma"><code class="language-fallback" data-lang="fallback">refresh.setProgressViewOffset(false, 50, 100);  //依次代表:是否缩放加载圆圈,偏移量顶部y值,偏移量底部y值  
refresh.setRefreshing(true);      
</code></pre></td></tr></table>
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</div><p>方法三:手动监听SwipeRefreshLayout的measure方法完成后再去setRefreshing(true)</p>
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<td class="lntd">
<pre class="chroma"><code class="language-fallback" data-lang="fallback">rootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {  
    @Override  
    public void onGlobalLayout() {  
        root.getViewTreeObserver().removeGlobalOnLayoutListener(this);  
        mRefreshLayout.setRefreshing(true);  
    }  
});   
</code></pre></td></tr></table>
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